web api event
HTMLCanvasElement: contextrestored event
The contextrestored event of the Canvas API is fired if the user agent restores the backing storage for a CanvasRenderingContext2D.
You can redraw, re-retrieve resources, and reinitialize the state of your context after receiving this event.
Syntax
Use the event name in methods like addEventListener(), or set an event handler property.
addEventListener("contextrestored", (event) => { })
oncontextrestored = (event) => { }
Event type
A generic Event.
Example
The code fragment below detects the context restored event.
const canvas = document.getElementById("canvas");
canvas.addEventListener("contextrestored", (e) => {
console.log(e);
// call to redrawCanvas() or similar
});
Specifications
SpecificationsStandards references are available on the canonical MDN page.
Browser compatibility
Browser compatibilityCompatibility data is available on the canonical MDN page.